They have a field that is null.
它们拥有一个值为null的字段。
因此，它是空的。
注册表项的名称为空。
If doesn't exist or is NULL, set to and return.
如果不存在或者是NULL，就把设置为并返回。
The award is null and void and has no binding force.
该裁决是无效的，没有拘束力。
If the list is null, require will throw an exception.
如果这个列表是null,require会抛出一个异常。
If the return value is an object, the default is null.
如果返回值是一个对象，默认为空值。
If a comparison value is null, the result is unknown.
如果比较值是空值，则结果未知。
It returns null if the source string is null or empty.
如果源字符串是null或空，则将返回null。
If the host is not defined already, the output is null.
如果还没有定义该主机，那么输出将为空。
If this is NULL, the object handle cannot be inherited.
如果这个指针为NULL，那么这个对象就不能被初始化。
If the source string is null or empty, then 0 is returned.
如果源字符串是null或空，则将返回0。
If the directory is NULL or an empty string, no files will be exported.
如果这个目录是NULL或空字符串，那么不导出文件。
Items that could not be found (their price is NULL) can be filtered out.
对于不能找到的产品(价格为NULL)，可以将其过滤掉。
The procedure does not perform any action if the given table name is NULL.
如果给出的表名为NULL，则该过程不执行任何动作。
Otherwise, it will lead to cooperative development contract is null and void.
否则，它会导致合作开发合同是无效的。
The impact at Hitachi is null, whereas it is already more significant at Western.
对，日立是无效而现在已是更重要的，在西方。
Two threads can get inside of the if statement concurrently when instance is null.
当instance为null时，两个线程可以并发地进入if语句内部。
Accessing the null pointer is very dangerous, as it might crash your program.
访问空指针是非常危险的，因为它可能使您的程序崩溃。
If no match is found, return null to the client application.
如果没有发现匹配，就向客户端应用程序返回空值。
The program needs to check and see if the current node is the NULL list.
程序需要检查确认当前节点是否为NULL列表。
If no match is found within the input, a null value is returned.
如果在输入中未找到匹配项，则返回空值。
The case of one or both arrays being null is also handled.
数组为空的情况也作了考虑。
The obvious issue is that the NULL check must be part of the while loop.
明显的问题是NULL检查必须放在 while 循环中。
Short descriptions are required (that is, they cannot be null).
短描述是必需的(即它们不能为null)。
Within this routine, first a check for non-null context handle is made.
在这个例程中，首先检查是否有非空的上下文句柄。
The corresponding field in the business object is automatically set to null.
业务对象中的对应字段将自动设置为空。
If no value is provided, the column will be NULL.
如果没有提供任何值，则该列将为NULL。
The last example, (), is used to refer to the empty, or null, list.
最后一个示例 ()用来表示一个空列表。
Clearly, SOAP separating is not the same as a null pointer.
显然，SOAP分离并不同于空指针。
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